/Engine/Source/Editor/UnrealEd/Public/EdGraphUtilities.h
Returns true if the ParamaterName is marked as a Set, Map, or array param in the relevant function
static bool IsDynamicContainerParam ( const [UFunction](API\Runtime\CoreUObject\UObject\UFunction) * Function, const [FName](API\Runtime\Core\UObject\FName) ParameterName )